<SEC-DOCUMENT>0000919574-21-001107-index.html : 20210216
<SEC-HEADER>0000919574-21-001107.hdr.sgml : 20210216
<ACCEPTANCE-DATETIME>20210212193407
ACCESSION NUMBER:		0000919574-21-001107
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20210216
DATE AS OF CHANGE:		20210212

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GSE SYSTEMS INC
		CENTRAL INDEX KEY:			0000944480
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				521868008
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-45371
		FILM NUMBER:		21631188

	BUSINESS ADDRESS:	
		STREET 1:		1332 LONDONTOWN BLVD
		CITY:			SYKESVILLE
		STATE:			MD
		ZIP:			21784
		BUSINESS PHONE:		4109707874

	MAIL ADDRESS:	
		STREET 1:		1332 LONDONTOWN BLVD
		CITY:			SYKESVILLE
		STATE:			MD
		ZIP:			21784

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NEEDHAM INVESTMENT MANAGEMENT LLC
		CENTRAL INDEX KEY:			0001167212
		IRS NUMBER:				223408336
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		250 PARK AVENUE, 10TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10177
		BUSINESS PHONE:		212-705-0404

	MAIL ADDRESS:	
		STREET 1:		250 PARK AVENUE, 10TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10177
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>d7821355_sc13g-a.htm
<TEXT>
Document 1 - file: d7821355_sc13g-a.htm

</DOCUMENT>
</SEC-DOCUMENT>